21520136

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{244547}}^1$

素因数の和:244564

約数の個数: 16

約数和(自身を含む): 44018640

約数和(自身を除く): 22498504

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 244547, 489094, 978188, 1956376, 2690017, 5380034, 10760068, 21520136]

約数ペア:

[(1, 21520136), (2, 10760068), (4, 5380034), (8, 2690017), (11, 1956376), (22, 978188), (44, 489094), (88, 244547)]